diff --git a/zh-cn/application-dev/security/cryptoFramework-guidelines.md b/zh-cn/application-dev/security/cryptoFramework-guidelines.md
index 4a9682e5fd5f4a1f1958986ed753c98d192b80b4..e6672c65f59a207d55e10af2f9a2a4d46da73415 100644
--- a/zh-cn/application-dev/security/cryptoFramework-guidelines.md
+++ b/zh-cn/application-dev/security/cryptoFramework-guidelines.md
@@ -1064,7 +1064,7 @@ function signLongMessagePromise() {
       resolve("testRsaMultiUpdate");
     }, 10);
   }).then(() => {
-    return asyKeyGenerator.generateKeyPair(); // 生成rsa密钥
+    return asyKeyGenerator.generateKeyPair(); // 生成RSA密钥
   }).then(keyPair => {
     globalKeyPair = keyPair; // 保存到密钥对全局变量
     return signer.init(globalKeyPair.priKey);